Wegmans' Roasted Brussel Sprouts with Tomato Pesto

These are a hit at the store with both employees and customers. The walnuts are optional, I'm not a huge fan of them. I also use more than 3 Tbsp. of the tomato pesto sauce- I use the whole jar. Feel free to add other things, but the original is exceptionally tasty, enticing both children and veggie-haters to try the infamous Brussel sprout.

2 lbs. Brussel sprouts, halved if small, quartered if large
1 jar Wegmans' tomato pesto sauce
1/2 red onion, peeled and sliced
2 Tbsp. Wegmans' Basting Oil
salt and pepper to taste
Optional: 1 cup walnuts, toasted and chopped

Toss the sprouts in the basting oil, some salt and pepper, and 1/2 the jar of pesto. Add in the onion pieces. Lay flat on a baking sheet and roast at 350 F for about 45 minutes, or until loose leaves are dark brown and crunchy, and sprouts are slightly browned. Toss with rest of the sauce. Add in your walnuts if you choose.